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Development of innovative therapies for solid tumors by regulating plasticity

Research Project

Project/Area Number 21K19568
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 56:Surgery related to the biological and sensory functions and related fields
Research InstitutionNagoya University (2022-2023)
Kyoto University (2021)

Principal Investigator

Akamatsu Shusuke  名古屋大学, 医学系研究科, 教授 (20767248)

Co-Investigator(Kenkyū-buntansha) 佐野 剛視  京都大学, 医学研究科, 助教 (60866309)
後藤 崇之  京都大学, 医学研究科, 講師 (90806605)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords可塑性 / 前立腺癌 / 神経内分泌前立腺癌 / 固形癌 / スクリーニング / 神経内分泌化
Outline of Research at the Start

本研究では独自に樹立した新規神経内分泌前立腺癌(NEPC)細胞株KUCaP13を用いて、NEPCにアンドロゲン受容体(AR)を再発現させる化合物をスクリーニングする。可塑性を制御して、ARを発現しないNEPCから発現する前立腺癌に細胞系統を戻し、新規AR経路阻害剤(ARPI)の感受性再獲得を目指す。本研究の成果はNEPCの治療開発に留まらず、可塑性のメカニズム解明や他癌種の新規治療開発につながると期待され、癌腫の垣根を超えた革新的な研究となる。

Outline of Final Research Achievements

A reporter gene, AREluc was transduced into a novel neuroendocrine prostate cancer (NEPC) cell line, KUCaP13 cells to detect androgen receptor (AR) activity. Positive control cells (KUCaP13_AREluc_AR) overexpressing AR showed enhanced luminescence upon administration of synthetic androgen. We developed the screening system to detect AR re-expression in an NEPC cell line. Although a chemical screening of 1,552 known compounds revealed 30 candidate molecules potentially enhancing luciferase luminescence, all hit compounds were confirmed as false positives, probably due to their inhibitory activity on luciferase. We developed a screening system to evaluate the reversibility of plasticity using a novel NEPC cell line; however, no compound demonstrated the ability to regulate plasticity.

Academic Significance and Societal Importance of the Research Achievements

神経内分泌前立腺癌(NEPC)においては系統的可塑性を反映した細胞株が存在せず、大規模なスクリーニングは困難であった。我々は系統的可塑性の表現型を有する新規NEPC細胞株KUCaP13を樹立し、これを用いて可塑性の可逆性を評価できるスクリーニング系を開発した。本研究では単一化合物ではアンドロゲンレセプター(AR)を再発現できなかったが、複数の化合物を組み合わせるなど、今後さらなる研究に応用可能である。また前立腺癌は他の固形癌と異なりAR活性で可塑性を評価できるので、他の固形癌では困難な可塑性を評価するスクリーニング系で得られた成果は、他の癌種における可塑性研究への応用が期待できる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2024 2023 2021

All Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Establishment and characterization of a novel treatment-related neuroendocrine prostate cancer cell line KUCaP132021

    • Author(s)
      Kosuke Okasho, Takayuki Goto, Shusuke Akamatsu
    • Journal Title

      Cancer Science

      Volume: 112 Issue: 7 Pages: 2781-2791

    • DOI

      10.1111/cas.14935

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] NEPCにおける系統的可塑性の可逆性を評価する高感度スクリーニング系の開発2024

    • Author(s)
      福井智洋、赤松秀輔
    • Organizer
      第33回泌尿器分子細胞研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A highly sensitive screening system to evaluate the reversibility of lineage plasticity in NEPC using a novel NEPC cell line2024

    • Author(s)
      福井智洋、赤松秀輔
    • Organizer
      第111回日本泌尿器科学会総会
    • Related Report
      2023 Annual Research Report
  • [Presentation] NEPCの系統的可塑性は可逆的か?新規NEPC細胞株を用いたドラッグスクリーニングによる検討2023

    • Author(s)
      福井智洋、赤松秀輔
    • Organizer
      第82回日本癌学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] A highly-sensitive screening system to evaluate the reversibility of NEPC to prostate adenocarcinoma2023

    • Author(s)
      Tomohiro Fukui, Shusuke Akamatsu
    • Organizer
      20th UROLOGICAL ASSOCIATION OF ASIA CONGRESS 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 前立腺癌のlineage plasticityを深掘する2023

    • Author(s)
      福井智洋、赤松秀輔
    • Organizer
      第38回前立腺癌シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 治療関連内分泌前立腺癌患者由来の新規細胞株KUCaP13の樹立とその特徴2021

    • Author(s)
      赤松秀輔
    • Organizer
      第109回 日本泌尿器科学会総会
    • Related Report
      2021 Research-status Report

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Published: 2021-07-13   Modified: 2025-01-30  

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